A high-precision anti-interference laser distance measuring device

Abstract

The present invention discloses a high-precision anti-interference laser distance measuring device, comprising a bottom plate, a through slot, a shielding cover and a distance measuring machine body, wherein the top of the bottom plate is provided with a through slot, the bottom of the bottom plate is provided with a return plate; the top of the return plate is provided with a shielding cover, the inner wall of the shielding cover is provided with a distance measuring machine body; a fixing ring is provided on the inner wall of one side of the distance measuring machine body, a semiconductor laser is installed through the top of the fixing ring, a sleeve ring is provided on the outer surface of the semiconductor laser, a connecting rod is provided on the outer surface of the sleeve ring, a connecting ring is provided on the tail end of the connecting rod, and a lens is provided on the inner wall of the sleeve ring. The present invention can increase the effect of shielding interference during the distance measuring process, and can flow air to reduce the possibility of dust gathering on the lens, wherein the distance measuring machine body and the bottom plate can be quickly installed, and then the distance measuring machine body can change position to change the height of the position.

Description

Technical Field

[0001] The invention relates to the technical field of laser distance measurement, in particular to a high-precision anti-interference type laser distance measurement device. Background Art

[0002] With the development of modern science and technology, laser ranging can be used in various aspects. It is particularly important to solve the interference problem in laser ranging. In the laser ranging system, the sources of interference mainly include power supply interference, space radiation, process channel interference, etc. Shielding can be used to solve such interference problems to a certain extent.

[0003] The defects of existing laser ranging equipment are:

[0004] 1. Patent document CN113466885A discloses a laser distance measuring sensor distance measuring device, "the pre-installed block end face is provided with a screw, the upper and lower ends of the pre-installed block are provided with an embedding groove, the embedding groove is adapted to the embedding block, the base is provided with a card slot on both sides, and the lower end of the slider is provided with a buckle, the buckle is inserted into the card slot, and the screw is inserted into the front threaded hole of the sensor housing; the laser distance measuring sensor distance measuring device of the present invention belongs to the field of laser distance measuring sensors, the screw is inserted into the front threaded hole of the sensor housing to realize the connection between the pre-installed block and the sensor housing, the pre-installed block is embedded in the pre-installed groove, the embedding grooves at the upper and lower ends of the pre-installed block are adapted to the embedding block set on the upper and lower walls of the pre-installed groove, the pre-installed block can realize the limit of the pre-installed block, and the buckle is inserted into the card slot to realize the fixed connection between the slider and the base, thereby realizing the rapid assembly between the pre-installed block, the slider and the base, and thus completing the rapid installation between the base and the sensor housing." However, the anti-interference performance of the distance measuring mechanism in this device is low, resulting in a slow response of the distance measuring mechanism to receive signals in actual applications;

[0005] 2. Patent document CN213600058U discloses a laser distance measuring device and a laser distance measuring instrument thereof, "including: a housing, a main control circuit board, a mounting seat, and an optoelectronic component arranged on the mounting seat, a connecting device is arranged on the housing, and the connecting device is used to fix the laser distance measuring instrument to the imaging device; the optoelectronic component includes: a laser emitting device, a laser receiving device and a reference point indicating device, the optical path of the laser emitting device and the optical path of the laser receiving device are set to be independent of each other, and the optical axis of the laser emitting device in the optical path and the optical axis of the reference point indicating device generated by the optical path of the reference point indicating device are set on the same straight line. It also relates to a laser distance measuring device including a laser distance measuring instrument and an imaging device." However, during the use of this device, dust is likely to accumulate on the lens of the laser distance measuring device, affecting the distance measuring effect;

[0006] 3. Patent document CN214407439U discloses a laser distance measuring device clamping device and a laser distance measuring device, "including a laser distance measuring device, a car calibration bracket and a laser distance measuring device clamping device. The laser distance measuring device clamping device includes a support and a support block, the support can be detachably installed between the support block, the support is used to be added to the car calibration bracket, and the support block is used to connect with the laser distance measuring device to be installed on the support, so that the laser distance measuring device can be quickly installed on the car calibration bracket, and the laser distance measuring device is used to realize the laser distance measurement between the car calibration bracket and the vehicle to be measured, thereby ensuring the distance measurement accuracy and convenience." However, the installation of the laser distance measuring device in this device is relatively cumbersome, which is relatively time-consuming in actual application;

[0007] 4. Patent document CN111551916A discloses a laser rangefinder, "including a shell, forming a cavity; a tape measure assembly, arranged in the cavity, the tape measure assembly includes a roller and a scale strip wrapped around the roller, and the side wall of the roller is also provided with a grating scale; a laser emitting assembly, arranged in the cavity, the laser emitting assembly includes a laser emitter, and the laser emitter is arranged directly opposite to the grating scale; a length detection unit, the length detection unit is arranged on the inner wall of the cavity and is used to detect the telescopic length of the scale strip; the calibration unit is arranged adjacent to the scale strip, and the calibration unit is used to calibrate the telescopic length of the scale strip. The present application is intended to reduce test errors, thereby improving the accuracy of the laser rangefinder." However, when the device is combined with other components, it cannot adjust the height position in the space according to actual needs. Summary of the invention

[0008] The purpose of the present invention is to provide a high-precision anti-interference laser ranging device to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a high-precision anti-interference laser ranging device, comprising a bottom plate, a through slot, a shielding cover and a rangefinder body, wherein the top of the bottom plate is provided with a through slot, and the bottom of the bottom plate is provided with a return plate;

[0010] A shielding cover is installed on the top of the circular plate, and the top of the shielding cover extends out of the interior of the through slot, and a rangefinder body is installed on the inner wall of the shielding cover;

[0011] A fixing ring is installed on the inner wall of one side of the rangefinder body, a semiconductor laser is installed through the top of the fixing ring, a collar is installed on the outer surface of the semiconductor laser, a connecting rod is installed on the outer surface of the collar, a connecting ring is installed on the tail end of the connecting rod, a lens 1 is installed on the inner wall of the connecting ring, a linear CCD array camera and an assembly are installed on the inner wall of the other side of the rangefinder body, a lens 2 is installed on the inner wall of the assembly, a low-pass filter is installed on the inner wall of the rangefinder body, and the low-pass filter is located below the lens 2.

[0012] Preferably, the linear CCD array camera is located above the assembly, a bottom lens is installed at the bottom of the rangefinder body, a signal processor is installed on the inner wall of the rangefinder body, and the signal processor is electrically connected to the semiconductor laser and the linear CCD array camera.

[0013] Preferably, a connecting block is installed on the front side of the base plate, a vertical plate is installed on the bottom of the connecting block, a threaded groove is provided on the front side of the vertical plate, and a fan is installed on the inner wall of the threaded groove by threaded engagement.

[0014] Preferably, two groups of round rods arranged side by side are installed on the top of the bottom plate, a fixing block is installed between the two groups of round rods, a circular frame is installed on the back of the fixing block, and the inner wall of the circular frame is in contact with the outer wall of the shielding cover.

[0015] Preferably, fixing plates are installed on the outer walls on both sides of the base plate, electric push rods are installed through the outer walls on the opposite sides of the two groups of fixing plates, pressure plates are installed at one end of the two groups of electric push rods, rubber sheets are installed on the outer walls on the opposite sides of the two groups of pressure plates, and the outer walls of the two groups of rubber sheets away from the pressure plates are in contact with the outer wall of the shielding cover.

[0016] Preferably, two groups of electric telescopic rods arranged side by side are installed on the top of the base plate, and the electric telescopic rods are located behind the round rods, and integrated boards are installed on the outer surfaces of the two groups of electric telescopic rods, and circular discs are installed on the tops of the two groups of electric telescopic rods, and the bottoms of the circular discs are fitted with the tops of the integrated boards, and two groups of engaging grooves arranged side by side are provided on the front of the integrated boards.

[0017] Preferably, the back of the two groups of round rods are installed with engaging rods, and the back of the engaging rods extends into the interior of the engaging grooves, the bottom of the two groups of engaging rods are installed with hanging rods, and the outer walls of one side of the two groups of hanging rods are in contact with the outer wall of the circular frame.

[0018] Preferably, an assembler is installed on the back of the integrated board, two groups of threaded barrels arranged vertically are installed on the back of the integrated board, and the back of the threaded barrels penetrates the interior of the assembler, two groups of threaded columns arranged vertically are installed on the back of the assembler, and the outer surfaces of the threaded columns are fitted with the inner walls of the threaded barrels, and a display panel is installed on the front of the rangefinder body, and the front of the display panel extends out of the interior of the shielding cover.

[0019] Preferably, the working steps of the laser ranging device are as follows:

[0020] S1. The staff aligns the integrated board with the front of the assembler, and then applies a pushing force to the integrated board toward the location of the assembler, so that the two sets of threaded barrels installed on the back of the integrated board pass through the two sets of slots set on the assembler. Then the threaded column can be aligned with the back of the threaded barrel, and then a pushing force is applied to the threaded column in the direction where the threaded column is located, and a rotational force in a set direction is applied to the threaded column, so that the threaded column and the threaded barrel are combined into a whole through threaded engagement;

[0021] S2, then place the whole body composed of the shielding cover and the rangefinder body on the top of the return frame, and then drive the whole body to gradually move downward, so that the bottom of the whole body passes through the return frame and the inside of the through slot, and then the bottom of the shielding cover fits with the top of the return plate, and then start the two sets of electric push rods, so that they can extend outward at the same time, so as to drive the pressure plate installed at one end to move in the direction of the shielding cover, until the outer wall of one side of the rubber sheet installed on the outer surface of the pressure plate is tightly fitted with the outer surface of the shielding cover, that is, stop the operation of the electric push rod;

[0022] S3. Before the assembler is operated, two sets of electric telescopic rods can be started at the same time, and the two sets of electric telescopic rods can be extended downward to adjust their own comprehensive length to the longest state. When extending, the bottom plate and the components installed on the top of the bottom plate can be driven to move downward. At this time, the bottom of the rangefinder body and the bottom of the assembler are on the same horizontal plane;

[0023] S4, start the rangefinder body, emit red laser through the semiconductor laser, and then shoot the red laser to the surface of the object to be measured through the lens 1, and then the laser reflected by the object is transmitted to the linear CCD array camera inside the rangefinder body through the lens 2. According to different distances, the linear CCD array camera can see the measured light point at different angles, and then the signal processor can calculate the position of the light point on the linear CCD array camera according to the trigonometric function to obtain the distance between the rangefinder body itself and the measured object;

[0024] S5. After the object distance measurement is completed, the electric telescopic rod can be prompted to retract upward to adjust its own length to the original state. At this time, there is a certain distance between the distance measuring machine body and the bottom of the assembler. If the assembler is a laser welding head, the possibility of damage to the distance measuring machine body during the welding process can be reduced to a certain extent.

[0025] S6. The fan can be started at a fixed time. The power components installed inside drive the fan blades to rotate at a set speed and direction, which can generate a certain wind force to blow the air under the rangefinder body, turning the nearly static air environment under it into flowing air, thereby reducing the dust adsorbed on the bottom lens.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, the rangefinder body can be wrapped with a shielding cover, and then the power module in the rangefinder body can be shielded, and the shielding cover is grounded, and a low-pass filter is used to remove the high-frequency molecules contained in the power supply, so that the anti-interference performance of the device can be improved;

[0028] 2. In the present invention, the staff can start the fan at any time, so that the power component installed inside the fan drives the fan blades to rotate, generating a certain wind force, which is used to blow the air below the rangefinder body, and transform the nearly static air environment below it into flowing air, thereby reducing the dust adsorbed on the bottom lens and reducing the interference of dust on the laser rangefinder mechanism in the device;

[0029] 3. The installation between the rangefinder body and the bottom plate in the present invention is relatively convenient, wherein the whole body composed of the shielding cover and the rangefinder body is placed above the return frame, and then the whole body is driven to gradually move downward, so that the bottom of the whole body passes through the return frame and the interior of the through groove, and then the bottom of the shielding cover fits with the top of the return plate. At this time, the return frame can be used to limit the rangefinder body to prevent it from tipping over, and then the two sets of electric push rods are prompted to extend outward to drive the pressure plate installed at one end thereof to follow and move in the direction of the shielding cover until the outer wall of one side of the rubber sheet installed on the outer surface of the pressure plate is tightly fitted with the outer surface of the shielding cover. At this time, the two sets of pressure plates can apply relative clamping forces to the two sides of the whole body composed of the shielding cover and the rangefinder body, which can increase the stability of the overall installation. No screw structure is used throughout the process, making the installation and disassembly of the test machine body in the device more convenient;

[0030] 4. In the present invention, before the assembler is operated, the two sets of electric telescopic rods can be urged to extend downward to adjust their own comprehensive length to the longest state. While extending, the bottom plate and the components installed on the top of the bottom plate can be driven to move downward. At this time, the bottom of the rangefinder body and the bottom of the assembler are on the same horizontal plane. Then the distance measurement operation is performed. After the object distance measurement is completed, the electric telescopic rods can be urged to adjust their own length to the original state. At this time, there is a certain distance between the rangefinder body and the bottom of the assembler. If this assembler is a laser welding head, the possibility of damage to the rangefinder body during welding can be reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the installation structure of the shielding cover, the rangefinder body and the low-pass filter of the present invention;

[0033] Figure 3 It is a schematic diagram of the installation structure of the bottom plate, the connecting block, the vertical plate and the fan of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the bottom plate, the fixing plate and the electric push rod of the present invention;

[0035] Figure 5 It is a schematic diagram of the installation structure of the base plate, the electric telescopic rod and the integrated plate of the present invention;

[0036] Figure 6 It is a schematic diagram of the installation structure of the electric telescopic rod, the integrated plate and the disc of the present invention;

[0037] Figure 7 It is a schematic diagram of the installation structure of the fixing block, the return frame and the suspension rod of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the integrated plate, threaded barrel and threaded column of the present invention.

[0039] In the figure: 1, bottom plate; 2, through groove; 3, shielding cover; 4, rangefinder body; 5, return plate; 6, fixing ring; 7, semiconductor laser; 8, sleeve ring; 9, connecting rod; 10, lens one; 11, linear CCD array camera; 12, assembly part; 13, lens two; 14, low-pass filter; 15, bottom lens; 16, signal processor; 17, connecting block; 18, vertical plate; 19, fan; 20, round rod; 21, fixing block; 22, return frame; 23, fixing plate; 24, electric push rod; 25, pressure plate; 26, electric telescopic rod; 27, integrated board; 28, disc; 29, fitting groove; 30, fitting rod; 31, suspension rod; 32, assembler; 33, threaded barrel; 34, threaded column; 35, display panel. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] like Figure 2 As shown, a high-precision anti-interference laser ranging device includes a bottom plate 1, a through slot 2, a shielding cover 3 and a rangefinder body 4. The top of the bottom plate 1 is provided with a through slot 2, and a return plate 5 is installed at the bottom of the bottom plate 1;

[0045] Specifically, the base plate 1 provides a relatively stable installation place for the components on the top thereof, and facilitates the integration of the components into a whole, wherein it is fixedly connected to the circular plate 5, and the inner wall size of the circular plate 5 is smaller than the size of the through groove 2, so that the overall combination of the shielding cover 3 and the rangefinder body 4 can be conveniently snap-fitted and placed on top of the circular plate 5.

[0046] A shielding cover 3 is installed on the top of the circular plate 5, and the top of the shielding cover 3 extends out of the through slot 2, and a rangefinder body 4 is installed on the inner wall of the shielding cover 3;

[0047] A fixing ring 6 is installed on the inner wall of one side of the rangefinder body 4, a semiconductor laser 7 is installed through the top of the fixing ring 6, a collar 8 is installed on the outer surface of the semiconductor laser 7, a connecting rod 9 is installed on the outer surface of the collar 8, a connecting ring is installed on the tail end of the connecting rod 9, a lens 10 is installed on the inner wall of the connecting ring, a linear CCD array camera 11 and an assembly 12 are installed on the inner wall of the other side of the rangefinder body 4, a lens 2 13 is installed on the inner wall of the assembly 12, a low-pass filter 14 is installed on the inner wall of the rangefinder body 4, and the low-pass filter 14 is located below the lens 2 13.

[0048] Specifically, the shielding cover 3 can shield the power module in the rangefinder body 4, and use the shielding cover 3 to ground, and cooperate with the low-pass filter 14 to remove the high-frequency molecules contained in the power supply, and the ground wire selected by the rangefinder body 4 can be selected to have a thicker diameter, which can reduce the voltage drop generated on the ground wire to a certain extent, so that the interference of ground wire coupling is further reduced, and the fixing ring 6 can be used to install the semiconductor laser 7, increase the fit between the semiconductor laser 7 and the inner wall of the rangefinder body 4, and the sleeve ring 8 can be combined with the connecting rod 9 into a whole, and then provide a relatively stable support force for the installation of the connecting ring. After the semiconductor laser 7 is started, it can emit a red laser, and then the red laser is concentrated to the surface of the object to be measured through the lens 10, and then reflected by the object, and then the laser is collected by the lens 2 13 and transmitted to the linear CCD array camera 11. According to different distances, the linear CCD array camera 11 can see the measured light point at different angles, and then transmit the information to the inside of the signal processor 16 electrically connected to it.

[0049] The linear CCD array camera 11 is located above the assembly 12 , a bottom lens 15 is installed at the bottom of the rangefinder body 4 , a signal processor 16 is installed on the inner wall of the rangefinder body 4 , and the signal processor 16 is electrically connected to the semiconductor laser 7 and the linear CCD array camera 11 .

[0050] Specifically, the signal processor 16 can calculate the position of the light spot on the linear CCD array camera 11 according to the trigonometric function to obtain the distance between the rangefinder body 4 itself and the measured object.

[0051] Embodiment 2

[0052] like Figure 3 As shown, a connecting block 17 is installed on the front of the base plate 1, a vertical plate 18 is installed at the bottom of the connecting block 17, a threaded groove is provided on the front of the vertical plate 18, and a fan 19 is installed on the inner wall of the threaded groove through threaded engagement.

[0053] Specifically, the connecting block 17 provides a relatively stable and suitable installation place for the installation of the vertical plate 18, so that the fan 19 installed later is conveniently aligned with the bottom and below of the rangefinder body 4. The internal threads of the thread groove and the threads provided on the outer surface of the fan 19 can match each other, thereby facilitating the detachable assembly between the fan 19 and the vertical plate 18. After the fan 19 is started, the power component installed inside it can drive the fan blades to rotate at a set speed and in a set direction, and then generate a certain wind force to blow the air below the rangefinder body 4, transforming the nearly static air environment below it into flowing air, thereby reducing the dust adsorbed on the bottom lens 15.

[0054] Embodiment 3

[0055] like Figure 1 , Figure 4 and Figure 7 As shown, two groups of round rods 20 arranged side by side are installed on the top of the bottom plate 1, a fixing block 21 is installed between the two groups of round rods 20, a return frame 22 is installed on the back of the fixing block 21, and the inner wall of the return frame 22 is in contact with the outer wall of the shielding cover 3.

[0056] Specifically, the round rod 20 provides a more suitable place for the installation of the fixed block 21 and the interlocking rod 30, and the fixed block 21 provides a more stable installation place for the circular frame 22, wherein the inner wall size of the circular frame 22 is the same as the outer wall size of the shielding cover 3. When the staff passes the whole formed by the shielding cover 3 and the rangefinder body 4 through the interior of the circular frame 22, the circular frame 22 can limit the whole and prevent the whole from tipping over to the four sides.

[0057] Fixed plates 23 are installed on the outer walls of both sides of the base plate 1, and electric push rods 24 are installed through the outer walls on the opposite sides of the two sets of fixed plates 23. One end of the two sets of electric push rods 24 is installed with a pressure plate 25, and the outer walls on the opposite sides of the two sets of pressure plates 25 are installed with rubber sheets, and the outer walls of the two sets of rubber sheets away from the pressure plates 25 are in contact with the outer wall of the shielding cover 3.

[0058] Specifically, the fixing plate 23 provides a more suitable place for the installation of the electric push rod 24, wherein the electric push rod 24 can extend outward or retract inward accordingly after being started, and then can drive the pressure plate 25 installed at one end thereof to follow the movement. In the device, after the rangefinder body 4 is placed on the base plate 1, the electric push rod 24 is required to drive the pressure plate 25 to move toward the outside of the shielding cover 3 until the outer wall of one side of the rubber sheet installed on the outer surface of the pressure plate 25 is tightly fitted with the outer surface of the shielding cover 3, that is, the operation of the electric push rod 24 is stopped. At this time, the two sets of pressure plates 25 can apply relative clamping forces to the two sides of the whole composed of the shielding cover 3 and the rangefinder body 4, which can increase the stability of this overall installation.

[0059] Embodiment 4

[0060] like Figure 1 , Figure 5 , Figure 6 and Figure 8 As shown, two groups of electric telescopic rods 26 arranged side by side are installed on the top of the base plate 1, and the electric telescopic rods 26 are located behind the round rod 20, and an integrated board 27 is installed on the outer surface of the two groups of electric telescopic rods 26, and a disc 28 is installed on the top of the two groups of electric telescopic rods 26, and the bottom of the disc 28 is in contact with the top of the integrated board 27, and two groups of engaging grooves 29 arranged side by side are provided on the front of the integrated board 27.

[0061] Specifically, after the electric telescopic rod 26 is started, it can extend downward or retract upward accordingly, and then drive the base plate 1 and the components installed on the top of the base plate 1 to move up and down. The integrated plate 27 can be used to integrate the two sets of electric telescopic rods 26, and at the same time provide a more suitable venue for the installation of two sets of threaded tubes 33. The diameter of the disc 28 is larger than the diameter of the electric telescopic rod 26, thereby preventing the electric telescopic rod 26 from falling from the integrated plate 27. The interlocking groove 29 can be used for the interlocking installation of the interlocking rod 30 to increase the stability of the installation of the base plate 1, wherein the interlocking rod 30 can slide up and down inside the interlocking groove 29 accordingly under the drive of the upward pushing force or the downward pulling force.

[0062] The back of the two groups of round rods 20 are both installed with a fitting rod 30, and the back of the fitting rod 30 extends into the interior of the fitting groove 29, and the bottom of the two groups of fitting rods 30 are both installed with a hanging rod 31, and the outer wall of one side of the two groups of hanging rods 31 is in contact with the outer wall of the return frame 22.

[0063] Specifically, the suspension rod 31 is used to connect the engaging rod 30 and the return frame 22 to increase the force bearing points for installing the return frame 22 .

[0064] An assembler 32 is installed on the back of the integrated board 27, two groups of threaded barrels 33 arranged up and down are installed on the back of the integrated board 27, and the back of the threaded barrel 33 passes through the interior of the assembler 32, two groups of threaded columns 34 arranged up and down are installed on the back of the assembler 32, and the outer surface of the threaded column 34 is fitted with the inner wall of the threaded barrel 33, and a display panel 35 is installed on the front of the rangefinder body 4, and the front of the display panel 35 extends out of the interior of the shielding cover 3.

[0065] Specifically, if the assembler 32 is a laser welding head, this device is used to monitor the distance between the welding head and the welding object, wherein the threaded barrel 33 and the threaded column 34 are connected by threaded engagement, thereby making the installation between the integrated board 27 and the assembler 32 detachable, and the display panel 35 can display the distance between the rangefinder body and the object being measured, so that the staff can intuitively understand the data information.

[0066] Specifically, the working steps of the laser ranging device are as follows:

[0067] S1. The staff aligns the integrated board 27 with the front of the assembler 32, and then applies a pushing force to the integrated board 27 toward the location of the assembler 32, so that the two sets of threaded barrels 33 installed on the back of the integrated board 27 pass through the two sets of slots set on the assembler 32. Then, the threaded column 34 can be aligned with the back of the threaded barrel 33, and then a pushing force is applied to the threaded column 34 in the direction where the threaded column 34 is located, and a rotational force in a set direction is applied to the threaded column 34, so that the threaded column 34 and the threaded barrel 33 are combined into a whole through threaded engagement;

[0068] S2, then place the whole body composed of the shielding cover 3 and the rangefinder body 4 above the return frame 22, and then drive the whole body to move downward gradually, so that the bottom of the whole body passes through the return frame 22 and the inside of the through slot 2, and then the bottom of the shielding cover 3 fits with the top of the return plate 5, and then start the two sets of electric push rods 24, so that they can extend outward at the same time, so as to drive the pressure plate 25 installed at one end thereof to move in the direction of the shielding cover 3, until the outer wall of one side of the rubber sheet installed on the outer surface of the pressure plate 25 is tightly fitted with the outer surface of the shielding cover 3, that is, the operation of the electric push rod 24 is stopped;

[0069] S3, before the assembler 32 is operated, two sets of electric telescopic rods 26 can be started at the same time, and the two sets of electric telescopic rods 26 can be extended downward to adjust their own comprehensive length to the longest state. When extending, the bottom plate 1 and the components installed on the top of the bottom plate 1 can be driven to move downward. At this time, the bottom of the rangefinder body 4 and the bottom of the assembler 32 are on the same horizontal plane;

[0070] S4, start the rangefinder body 4, emit red laser through the semiconductor laser 7, and then shoot the red laser to the surface of the object to be measured through the lens 1 10, and then the laser reflected by the object is transmitted to the linear CCD array camera 11 inside the rangefinder body 4 through the lens 2 13. According to different distances, the linear CCD array camera 11 can see the measured light point at different angles, and then the signal processor 16 can calculate the position of the light point on the linear CCD array camera 11 according to the trigonometric function to obtain the distance between the rangefinder body 4 itself and the measured object;

[0071] S5. After the object distance measurement is completed, the electric telescopic rod 26 can be prompted to retract upward to adjust its own length to the original state. At this time, there is a certain distance between the distance measuring machine body 4 and the bottom of the assembler 32. If the assembler 32 is a laser welding head, the possibility of damage to the distance measuring machine body 4 during the welding process can be reduced to a certain extent.

[0072] S6. The fan 19 can be started at a fixed time. The power components installed inside the fan drive the fan blades to rotate at a set speed and in a set direction, thereby generating a certain wind force for blowing the air below the rangefinder body 4, transforming the nearly static air environment below the rangefinder body 4 into flowing air, thereby reducing the dust adsorbed on the bottom lens 15.

[0073] Working principle: When the electric telescopic rod 26 is extended downward, the bottom plate 1 and the components installed on the top of the bottom plate 1 are driven to move downward, so that the bottom of the rangefinder body 4 and the bottom of the assembler 32 are on the same horizontal plane, the rangefinder body 4 can be started, and the semiconductor laser 7 emits a red laser, and then the red laser is shot to the surface of the object to be measured through the lens 1 10, and then the laser reflected by the object is transmitted to the linear CCD array camera 11 inside the rangefinder body 4 through the lens 2 13. According to different distances, the linear CCD array camera 11 can see the measured light point at different angles, and then the signal processor 16 can calculate the position of the light point on the linear CCD array camera 11 according to the trigonometric function to obtain the distance between the rangefinder body 4 itself and the measured object.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-precision anti-interference laser distance measuring device, comprising a base plate (1), a through slot (2), a shielding cover (3) and a distance measuring machine body (4), characterized in that: The top of the bottom plate (1) is provided with a through groove (2), and the bottom of the bottom plate (1) is installed with a return plate (5); A shielding cover (3) is installed on the top of the circular plate (5), and the top of the shielding cover (3) extends out of the interior of the through slot (2), and a rangefinder body (4) is installed on the inner wall of the shielding cover (3); A fixing ring (6) is installed on the inner wall of one side of the rangefinder body (4); a semiconductor laser (7) is installed through the top of the fixing ring (6); a collar (8) is installed on the outer surface of the semiconductor laser (7); a connecting rod (9) is installed on the outer surface of the collar (8); a connecting ring is installed at the tail end of the connecting rod (9); a lens 1 (10) is installed on the inner wall of the connecting ring; a linear CCD array camera (11) and an assembly (12) are installed on the inner wall of the other side of the rangefinder body (4); a lens 2 (13) is installed on the inner wall of the assembly (12); a low-pass filter (14) is installed on the inner wall of the rangefinder body (4), and the low-pass filter (14) is located below the lens 2 (13); The linear CCD array camera (11) is located above the assembly (12); a bottom lens (15) is installed at the bottom of the rangefinder body (4); a signal processor (16) is installed on the inner wall of the rangefinder body (4); and the signal processor (16) is electrically connected to the semiconductor laser (7) and the linear CCD array camera (11); A connecting block (17) is installed on the front of the bottom plate (1), a vertical plate (18) is installed on the bottom of the connecting block (17), a thread groove is provided on the front of the vertical plate (18), and a fan (19) is installed on the inner wall of the thread groove by threaded engagement; Two groups of round rods (20) arranged side by side are installed on the top of the bottom plate (1), a fixing block (21) is installed between the two groups of round rods (20), a return frame (22) is installed on the back of the fixing block (21), and the inner wall of the return frame (22) is in contact with the outer wall of the shielding cover (3); The outer walls on both sides of the bottom plate (1) are both installed with fixing plates (23), the outer walls on the opposite sides of the two sets of fixing plates (23) are both penetrated by electric push rods (24), one end of the two sets of electric push rods (24) are both installed with pressure plates (25), the outer walls on the opposite sides of the two sets of pressure plates (25) are both installed with rubber sheets, and the outer walls on the sides of the two sets of rubber sheets away from the pressure plates (25) are both in contact with the outer wall of the shielding cover (3); Two groups of electric telescopic rods (26) arranged side by side are installed on the top of the base plate (1), and the electric telescopic rods (26) are located behind the round rods (20). The outer surfaces of the two groups of electric telescopic rods (26) are installed with integrated plates (27). The tops of the two groups of electric telescopic rods (26) are installed with discs (28), and the bottoms of the discs (28) are in contact with the tops of the integrated plates (27). The front of the integrated plates (27) is provided with two groups of engaging grooves (29) arranged side by side. The backs of the two groups of round rods (20) are installed with engaging rods (30), and the backs of the engaging rods (30) extend into the interiors of the engaging grooves (29). An assembler (32) is installed on the back of the integrated board (27). Before the assembler (32) is operated, it prompts the two sets of electric telescopic rods (26) to extend downward to adjust their own integrated length to the longest state. When the assembler (32) extends, it drives the bottom plate (1) and the components installed on the top of the bottom plate (1) to move downward. At this time, the bottom of the rangefinder body (4) and the bottom of the assembler (32) are on the same horizontal plane. Then, the distance measurement operation is performed. After the distance measurement of the object is completed, the electric telescopic rods (26) are prompted to adjust their own length to the original state.

2. The high-precision anti-interference laser ranging device according to claim 1, characterized in that: The bottoms of the two groups of interlocking rods (30) are both installed with suspension rods (31), and the outer walls of one side of the two groups of suspension rods (31) are both in contact with the outer wall of the return frame (22).

3. The high-precision anti-interference laser ranging device according to claim 2, characterized in that: The back of the integrated board (27) is provided with two groups of threaded barrels (33) arranged vertically, and the back of the threaded barrels (33) penetrates the interior of the assembler (32); the back of the assembler (32) is provided with two groups of threaded columns (34) arranged vertically, and the outer surfaces of the threaded columns (34) are in contact with the inner walls of the threaded barrels (33); the front of the rangefinder body (4) is provided with a display panel (35), and the front of the display panel (35) extends out of the interior of the shielding cover (3).

4. The high-precision anti-interference laser ranging device according to claim 3, characterized in that: The working steps of the laser ranging device are as follows: S1. The staff aligns the integrated board (27) with the front of the assembler (32), and then applies a pushing force to the integrated board (27) toward the location of the assembler (32), so that the two groups of threaded cylinders (33) installed on the back of the integrated board (27) penetrate the two groups of slots provided on the assembler (32), and then aligns the threaded column (34) with the back of the threaded cylinder (33), and then applies a pushing force to the threaded column (34) in the direction where the threaded column (34) is located, and at the same time applies a rotational force in a set direction, so that the threaded column (34) and the threaded cylinder (33) are combined into a whole through threaded engagement; S2, then placing the whole composed of the shielding cover (3) and the rangefinder body (4) above the return frame (22), and then driving the whole to gradually move downward, so that the bottom of the whole passes through the return frame (22) and the inside of the through slot (2), and then the bottom of the shielding cover (3) is in contact with the top of the return plate (5), and then starting the two sets of electric push rods (24), so that they are simultaneously extended outward to drive the pressure plate (25) installed at one end thereof to move in the direction of the shielding cover (3), until the outer wall of one side of the rubber sheet installed on the outer surface of the pressure plate (25) is in close contact with the outer surface of the shielding cover (3), that is, the operation of the electric push rod (24) is stopped; S3, before the assembler (32) is operated, the two sets of electric telescopic rods (26) are simultaneously started, and the two sets of electric telescopic rods (26) are extended downward to adjust their own comprehensive length to the longest state. When they extend, they drive the bottom plate (1) and the components installed on the top of the bottom plate (1) to move downward. At this time, the bottom of the rangefinder body (4) and the bottom of the assembler (32) are on the same horizontal plane; S4, starting the rangefinder body (4), emitting a red laser through the semiconductor laser (7), and then irradiating the red laser through the lens 1 (10) toward the surface of the object to be measured, and then transmitting the laser reflected by the object through the lens 2 (13) to the linear CCD array camera (11) inside the rangefinder body (4), and according to different distances, the linear CCD array camera (11) sees the measured light point at different angles, and then the signal processor (16) calculates the position of the light point on the linear CCD array camera (11) according to the trigonometric function, so as to obtain the distance between the rangefinder body (4) itself and the measured object; S5, after the object distance measurement is completed, the electric telescopic rod (26) is prompted to retract upward to adjust its own length to the original state. At this time, there is a certain distance between the distance measuring machine body (4) and the bottom of the assembler (32). If the assembler (32) is a laser welding head, the possibility of damage to the distance measuring machine body (4) during the welding process is reduced to a certain extent; S6. The fan (19) is started at a fixed time. The fan blades are driven to rotate at a set speed and in a set direction through the power components installed inside, thereby generating a certain wind force for blowing the air below the rangefinder body (4), thereby converting the nearly static air environment below the rangefinder body (4) into flowing air, thereby reducing the dust adsorbed on the bottom lens (15).

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